| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/quote-1.0.28/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../quote/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../quote/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="doccomment">//! [![github]](https://github.com/dtolnay/quote)&ensp;[![crates-io]](https://crates.io/crates/quote)&ensp;[![docs-rs]](https://docs.rs/quote) |
| //! |
| //! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github |
| //! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust |
| //! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs |
| //! |
| //! <br> |
| //! |
| //! This crate provides the [`quote!`] macro for turning Rust syntax tree data |
| //! structures into tokens of source code. |
| //! |
| //! [`quote!`]: macro.quote.html |
| //! |
| //! Procedural macros in Rust receive a stream of tokens as input, execute |
| //! arbitrary Rust code to determine how to manipulate those tokens, and produce |
| //! a stream of tokens to hand back to the compiler to compile into the caller's |
| //! crate. Quasi-quoting is a solution to one piece of that &mdash; producing |
| //! tokens to return to the compiler. |
| //! |
| //! The idea of quasi-quoting is that we write *code* that we treat as *data*. |
| //! Within the `quote!` macro, we can write what looks like code to our text |
| //! editor or IDE. We get all the benefits of the editor's brace matching, |
| //! syntax highlighting, indentation, and maybe autocompletion. But rather than |
| //! compiling that as code into the current crate, we can treat it as data, pass |
| //! it around, mutate it, and eventually hand it back to the compiler as tokens |
| //! to compile into the macro caller's crate. |
| //! |
| //! This crate is motivated by the procedural macro use case, but is a |
| //! general-purpose Rust quasi-quoting library and is not specific to procedural |
| //! macros. |
| //! |
| //! ```toml |
| //! [dependencies] |
| //! quote = "1.0" |
| //! ``` |
| //! |
| //! <br> |
| //! |
| //! # Example |
| //! |
| //! The following quasi-quoted block of code is something you might find in [a] |
| //! procedural macro having to do with data structure serialization. The `#var` |
| //! syntax performs interpolation of runtime variables into the quoted tokens. |
| //! Check out the documentation of the [`quote!`] macro for more detail about |
| //! the syntax. See also the [`quote_spanned!`] macro which is important for |
| //! implementing hygienic procedural macros. |
| //! |
| //! [a]: https://serde.rs/ |
| //! [`quote_spanned!`]: macro.quote_spanned.html |
| //! |
| //! ``` |
| //! # use quote::quote; |
| //! # |
| //! # let generics = ""; |
| //! # let where_clause = ""; |
| //! # let field_ty = ""; |
| //! # let item_ty = ""; |
| //! # let path = ""; |
| //! # let value = ""; |
| //! # |
| //! let tokens = quote! { |
| //! struct SerializeWith #generics #where_clause { |
| //! value: &'a #field_ty, |
| //! phantom: core::marker::PhantomData<#item_ty>, |
| //! } |
| //! |
| //! impl #generics serde::Serialize for SerializeWith #generics #where_clause { |
| //! fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> |
| //! where |
| //! S: serde::Serializer, |
| //! { |
| //! #path(self.value, serializer) |
| //! } |
| //! } |
| //! |
| //! SerializeWith { |
| //! value: #value, |
| //! phantom: core::marker::PhantomData::<#item_ty>, |
| //! } |
| //! }; |
| //! ``` |
| //! |
| //! <br> |
| //! |
| //! # Non-macro code generators |
| //! |
| //! When using `quote` in a build.rs or main.rs and writing the output out to a |
| //! file, consider having the code generator pass the tokens through |
| //! [prettyplease] before writing. This way if an error occurs in the generated |
| //! code it is convenient for a human to read and debug. |
| //! |
| //! [prettyplease]: https://github.com/dtolnay/prettyplease |
| |
| </span><span class="comment">// Quote types in rustdoc of other crates get linked to here. |
| </span><span class="attribute">#![doc(html_root_url = <span class="string">"https://docs.rs/quote/1.0.28"</span>)] |
| #![allow( |
| clippy::doc_markdown, |
| clippy::missing_errors_doc, |
| clippy::missing_panics_doc, |
| clippy::module_name_repetitions, |
| <span class="comment">// false positive https://github.com/rust-lang/rust-clippy/issues/6983 |
| </span>clippy::wrong_self_convention, |
| )] |
| |
| #[cfg(feature = <span class="string">"proc-macro"</span>)] |
| </span><span class="kw">extern crate </span>proc_macro; |
| |
| <span class="kw">mod </span>ext; |
| <span class="kw">mod </span>format; |
| <span class="kw">mod </span>ident_fragment; |
| <span class="kw">mod </span>to_tokens; |
| |
| <span class="comment">// Not public API. |
| </span><span class="attribute">#[doc(hidden)] |
| #[path = <span class="string">"runtime.rs"</span>] |
| </span><span class="kw">pub mod </span>__private; |
| |
| <span class="kw">pub use </span><span class="kw">crate</span>::ext::TokenStreamExt; |
| <span class="kw">pub use </span><span class="kw">crate</span>::ident_fragment::IdentFragment; |
| <span class="kw">pub use </span><span class="kw">crate</span>::to_tokens::ToTokens; |
| |
| <span class="comment">// Not public API. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub mod </span>spanned; |
| |
| <span class="doccomment">/// The whole point. |
| /// |
| /// Performs variable interpolation against the input and produces it as |
| /// [`proc_macro2::TokenStream`]. |
| /// |
| /// Note: for returning tokens to the compiler in a procedural macro, use |
| /// `.into()` on the result to convert to [`proc_macro::TokenStream`]. |
| /// |
| /// [`TokenStream`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.TokenStream.html |
| /// |
| /// <br> |
| /// |
| /// # Interpolation |
| /// |
| /// Variable interpolation is done with `#var` (similar to `$var` in |
| /// `macro_rules!` macros). This grabs the `var` variable that is currently in |
| /// scope and inserts it in that location in the output tokens. Any type |
| /// implementing the [`ToTokens`] trait can be interpolated. This includes most |
| /// Rust primitive types as well as most of the syntax tree types from the [Syn] |
| /// crate. |
| /// |
| /// [`ToTokens`]: trait.ToTokens.html |
| /// [Syn]: https://github.com/dtolnay/syn |
| /// |
| /// Repetition is done using `#(...)*` or `#(...),*` again similar to |
| /// `macro_rules!`. This iterates through the elements of any variable |
| /// interpolated within the repetition and inserts a copy of the repetition body |
| /// for each one. The variables in an interpolation may be a `Vec`, slice, |
| /// `BTreeSet`, or any `Iterator`. |
| /// |
| /// - `#(#var)*` — no separators |
| /// - `#(#var),*` — the character before the asterisk is used as a separator |
| /// - `#( struct #var; )*` — the repetition can contain other tokens |
| /// - `#( #k => println!("{}", #v), )*` — even multiple interpolations |
| /// |
| /// <br> |
| /// |
| /// # Hygiene |
| /// |
| /// Any interpolated tokens preserve the `Span` information provided by their |
| /// `ToTokens` implementation. Tokens that originate within the `quote!` |
| /// invocation are spanned with [`Span::call_site()`]. |
| /// |
| /// [`Span::call_site()`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html#method.call_site |
| /// |
| /// A different span can be provided through the [`quote_spanned!`] macro. |
| /// |
| /// [`quote_spanned!`]: macro.quote_spanned.html |
| /// |
| /// <br> |
| /// |
| /// # Return type |
| /// |
| /// The macro evaluates to an expression of type `proc_macro2::TokenStream`. |
| /// Meanwhile Rust procedural macros are expected to return the type |
| /// `proc_macro::TokenStream`. |
| /// |
| /// The difference between the two types is that `proc_macro` types are entirely |
| /// specific to procedural macros and cannot ever exist in code outside of a |
| /// procedural macro, while `proc_macro2` types may exist anywhere including |
| /// tests and non-macro code like main.rs and build.rs. This is why even the |
| /// procedural macro ecosystem is largely built around `proc_macro2`, because |
| /// that ensures the libraries are unit testable and accessible in non-macro |
| /// contexts. |
| /// |
| /// There is a [`From`]-conversion in both directions so returning the output of |
| /// `quote!` from a procedural macro usually looks like `tokens.into()` or |
| /// `proc_macro::TokenStream::from(tokens)`. |
| /// |
| /// [`From`]: https://doc.rust-lang.org/std/convert/trait.From.html |
| /// |
| /// <br> |
| /// |
| /// # Examples |
| /// |
| /// ### Procedural macro |
| /// |
| /// The structure of a basic procedural macro is as follows. Refer to the [Syn] |
| /// crate for further useful guidance on using `quote!` as part of a procedural |
| /// macro. |
| /// |
| /// [Syn]: https://github.com/dtolnay/syn |
| /// |
| /// ``` |
| /// # #[cfg(any())] |
| /// extern crate proc_macro; |
| /// # extern crate proc_macro2; |
| /// |
| /// # #[cfg(any())] |
| /// use proc_macro::TokenStream; |
| /// # use proc_macro2::TokenStream; |
| /// use quote::quote; |
| /// |
| /// # const IGNORE_TOKENS: &'static str = stringify! { |
| /// #[proc_macro_derive(HeapSize)] |
| /// # }; |
| /// pub fn derive_heap_size(input: TokenStream) -> TokenStream { |
| /// // Parse the input and figure out what implementation to generate... |
| /// # const IGNORE_TOKENS: &'static str = stringify! { |
| /// let name = /* ... */; |
| /// let expr = /* ... */; |
| /// # }; |
| /// # |
| /// # let name = 0; |
| /// # let expr = 0; |
| /// |
| /// let expanded = quote! { |
| /// // The generated impl. |
| /// impl heapsize::HeapSize for #name { |
| /// fn heap_size_of_children(&self) -> usize { |
| /// #expr |
| /// } |
| /// } |
| /// }; |
| /// |
| /// // Hand the output tokens back to the compiler. |
| /// TokenStream::from(expanded) |
| /// } |
| /// ``` |
| /// |
| /// <p><br></p> |
| /// |
| /// ### Combining quoted fragments |
| /// |
| /// Usually you don't end up constructing an entire final `TokenStream` in one |
| /// piece. Different parts may come from different helper functions. The tokens |
| /// produced by `quote!` themselves implement `ToTokens` and so can be |
| /// interpolated into later `quote!` invocations to build up a final result. |
| /// |
| /// ``` |
| /// # use quote::quote; |
| /// # |
| /// let type_definition = quote! {...}; |
| /// let methods = quote! {...}; |
| /// |
| /// let tokens = quote! { |
| /// #type_definition |
| /// #methods |
| /// }; |
| /// ``` |
| /// |
| /// <p><br></p> |
| /// |
| /// ### Constructing identifiers |
| /// |
| /// Suppose we have an identifier `ident` which came from somewhere in a macro |
| /// input and we need to modify it in some way for the macro output. Let's |
| /// consider prepending the identifier with an underscore. |
| /// |
| /// Simply interpolating the identifier next to an underscore will not have the |
| /// behavior of concatenating them. The underscore and the identifier will |
| /// continue to be two separate tokens as if you had written `_ x`. |
| /// |
| /// ``` |
| /// # use proc_macro2::{self as syn, Span}; |
| /// # use quote::quote; |
| /// # |
| /// # let ident = syn::Ident::new("i", Span::call_site()); |
| /// # |
| /// // incorrect |
| /// quote! { |
| /// let mut _#ident = 0; |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// The solution is to build a new identifier token with the correct value. As |
| /// this is such a common case, the [`format_ident!`] macro provides a |
| /// convenient utility for doing so correctly. |
| /// |
| /// ``` |
| /// # use proc_macro2::{Ident, Span}; |
| /// # use quote::{format_ident, quote}; |
| /// # |
| /// # let ident = Ident::new("i", Span::call_site()); |
| /// # |
| /// let varname = format_ident!("_{}", ident); |
| /// quote! { |
| /// let mut #varname = 0; |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// Alternatively, the APIs provided by Syn and proc-macro2 can be used to |
| /// directly build the identifier. This is roughly equivalent to the above, but |
| /// will not handle `ident` being a raw identifier. |
| /// |
| /// ``` |
| /// # use proc_macro2::{self as syn, Span}; |
| /// # use quote::quote; |
| /// # |
| /// # let ident = syn::Ident::new("i", Span::call_site()); |
| /// # |
| /// let concatenated = format!("_{}", ident); |
| /// let varname = syn::Ident::new(&concatenated, ident.span()); |
| /// quote! { |
| /// let mut #varname = 0; |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// <p><br></p> |
| /// |
| /// ### Making method calls |
| /// |
| /// Let's say our macro requires some type specified in the macro input to have |
| /// a constructor called `new`. We have the type in a variable called |
| /// `field_type` of type `syn::Type` and want to invoke the constructor. |
| /// |
| /// ``` |
| /// # use quote::quote; |
| /// # |
| /// # let field_type = quote!(...); |
| /// # |
| /// // incorrect |
| /// quote! { |
| /// let value = #field_type::new(); |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// This works only sometimes. If `field_type` is `String`, the expanded code |
| /// contains `String::new()` which is fine. But if `field_type` is something |
| /// like `Vec<i32>` then the expanded code is `Vec<i32>::new()` which is invalid |
| /// syntax. Ordinarily in handwritten Rust we would write `Vec::<i32>::new()` |
| /// but for macros often the following is more convenient. |
| /// |
| /// ``` |
| /// # use quote::quote; |
| /// # |
| /// # let field_type = quote!(...); |
| /// # |
| /// quote! { |
| /// let value = <#field_type>::new(); |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// This expands to `<Vec<i32>>::new()` which behaves correctly. |
| /// |
| /// A similar pattern is appropriate for trait methods. |
| /// |
| /// ``` |
| /// # use quote::quote; |
| /// # |
| /// # let field_type = quote!(...); |
| /// # |
| /// quote! { |
| /// let value = <#field_type as core::default::Default>::default(); |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// <p><br></p> |
| /// |
| /// ### Interpolating text inside of doc comments |
| /// |
| /// Neither doc comments nor string literals get interpolation behavior in |
| /// quote: |
| /// |
| /// ```compile_fail |
| /// quote! { |
| /// /// try to interpolate: #ident |
| /// /// |
| /// /// ... |
| /// } |
| /// ``` |
| /// |
| /// ```compile_fail |
| /// quote! { |
| /// #[doc = "try to interpolate: #ident"] |
| /// } |
| /// ``` |
| /// |
| /// Instead the best way to build doc comments that involve variables is by |
| /// formatting the doc string literal outside of quote. |
| /// |
| /// ```rust |
| /// # use proc_macro2::{Ident, Span}; |
| /// # use quote::quote; |
| /// # |
| /// # const IGNORE: &str = stringify! { |
| /// let msg = format!(...); |
| /// # }; |
| /// # |
| /// # let ident = Ident::new("var", Span::call_site()); |
| /// # let msg = format!("try to interpolate: {}", ident); |
| /// quote! { |
| /// #[doc = #msg] |
| /// /// |
| /// /// ... |
| /// } |
| /// # ; |
| /// ``` |
| /// |
| /// <p><br></p> |
| /// |
| /// ### Indexing into a tuple struct |
| /// |
| /// When interpolating indices of a tuple or tuple struct, we need them not to |
| /// appears suffixed as integer literals by interpolating them as [`syn::Index`] |
| /// instead. |
| /// |
| /// [`syn::Index`]: https://docs.rs/syn/1.0/syn/struct.Index.html |
| /// |
| /// ```compile_fail |
| /// let i = 0usize..self.fields.len(); |
| /// |
| /// // expands to 0 + self.0usize.heap_size() + self.1usize.heap_size() + ... |
| /// // which is not valid syntax |
| /// quote! { |
| /// 0 #( + self.#i.heap_size() )* |
| /// } |
| /// ``` |
| /// |
| /// ``` |
| /// # use proc_macro2::{Ident, TokenStream}; |
| /// # use quote::quote; |
| /// # |
| /// # mod syn { |
| /// # use proc_macro2::{Literal, TokenStream}; |
| /// # use quote::{ToTokens, TokenStreamExt}; |
| /// # |
| /// # pub struct Index(usize); |
| /// # |
| /// # impl From<usize> for Index { |
| /// # fn from(i: usize) -> Self { |
| /// # Index(i) |
| /// # } |
| /// # } |
| /// # |
| /// # impl ToTokens for Index { |
| /// # fn to_tokens(&self, tokens: &mut TokenStream) { |
| /// # tokens.append(Literal::usize_unsuffixed(self.0)); |
| /// # } |
| /// # } |
| /// # } |
| /// # |
| /// # struct Struct { |
| /// # fields: Vec<Ident>, |
| /// # } |
| /// # |
| /// # impl Struct { |
| /// # fn example(&self) -> TokenStream { |
| /// let i = (0..self.fields.len()).map(syn::Index::from); |
| /// |
| /// // expands to 0 + self.0.heap_size() + self.1.heap_size() + ... |
| /// quote! { |
| /// 0 #( + self.#i.heap_size() )* |
| /// } |
| /// # } |
| /// # } |
| /// ``` |
| </span><span class="attribute">#[cfg(doc)] |
| #[macro_export] |
| </span><span class="macro">macro_rules! </span>quote { |
| ($(<span class="macro-nonterminal">$tt</span>:tt)<span class="kw-2">*</span>) => { |
| ... |
| }; |
| } |
| |
| <span class="attribute">#[cfg(not(doc))] |
| #[macro_export] |
| </span><span class="macro">macro_rules! </span>quote { |
| () => { |
| <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>() |
| }; |
| |
| <span class="comment">// Special case rule for a single tt, for performance. |
| </span>(<span class="macro-nonterminal">$tt</span>:tt) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{<span class="macro-nonterminal">$tt </span>_s} |
| _s |
| }}; |
| |
| <span class="comment">// Special case rules for two tts, for performance. |
| </span>(# <span class="macro-nonterminal">$var</span>:ident) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="macro-nonterminal">$crate::ToTokens::to_tokens</span>(<span class="kw-2">&</span><span class="macro-nonterminal">$var</span>, <span class="kw-2">&mut </span>_s); |
| _s |
| }}; |
| (<span class="macro-nonterminal">$tt1</span>:tt <span class="macro-nonterminal">$tt2</span>:tt) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{<span class="macro-nonterminal">$tt1 </span>_s} |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{<span class="macro-nonterminal">$tt2 </span>_s} |
| _s |
| }}; |
| |
| <span class="comment">// Rule for any other number of tokens. |
| </span>($(<span class="macro-nonterminal">$tt</span>:tt)<span class="kw-2">*</span>) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token!</span>{<span class="macro-nonterminal">_s </span>$(<span class="macro-nonterminal">$tt</span>)<span class="kw-2">*</span>} |
| _s |
| }}; |
| } |
| |
| <span class="doccomment">/// Same as `quote!`, but applies a given span to all tokens originating within |
| /// the macro invocation. |
| /// |
| /// <br> |
| /// |
| /// # Syntax |
| /// |
| /// A span expression of type [`Span`], followed by `=>`, followed by the tokens |
| /// to quote. The span expression should be brief &mdash; use a variable for |
| /// anything more than a few characters. There should be no space before the |
| /// `=>` token. |
| /// |
| /// [`Span`]: https://docs.rs/proc-macro2/1.0/proc_macro2/struct.Span.html |
| /// |
| /// ``` |
| /// # use proc_macro2::Span; |
| /// # use quote::quote_spanned; |
| /// # |
| /// # const IGNORE_TOKENS: &'static str = stringify! { |
| /// let span = /* ... */; |
| /// # }; |
| /// # let span = Span::call_site(); |
| /// # let init = 0; |
| /// |
| /// // On one line, use parentheses. |
| /// let tokens = quote_spanned!(span=> Box::into_raw(Box::new(#init))); |
| /// |
| /// // On multiple lines, place the span at the top and use braces. |
| /// let tokens = quote_spanned! {span=> |
| /// Box::into_raw(Box::new(#init)) |
| /// }; |
| /// ``` |
| /// |
| /// The lack of space before the `=>` should look jarring to Rust programmers |
| /// and this is intentional. The formatting is designed to be visibly |
| /// off-balance and draw the eye a particular way, due to the span expression |
| /// being evaluated in the context of the procedural macro and the remaining |
| /// tokens being evaluated in the generated code. |
| /// |
| /// <br> |
| /// |
| /// # Hygiene |
| /// |
| /// Any interpolated tokens preserve the `Span` information provided by their |
| /// `ToTokens` implementation. Tokens that originate within the `quote_spanned!` |
| /// invocation are spanned with the given span argument. |
| /// |
| /// <br> |
| /// |
| /// # Example |
| /// |
| /// The following procedural macro code uses `quote_spanned!` to assert that a |
| /// particular Rust type implements the [`Sync`] trait so that references can be |
| /// safely shared between threads. |
| /// |
| /// [`Sync`]: https://doc.rust-lang.org/std/marker/trait.Sync.html |
| /// |
| /// ``` |
| /// # use quote::{quote_spanned, TokenStreamExt, ToTokens}; |
| /// # use proc_macro2::{Span, TokenStream}; |
| /// # |
| /// # struct Type; |
| /// # |
| /// # impl Type { |
| /// # fn span(&self) -> Span { |
| /// # Span::call_site() |
| /// # } |
| /// # } |
| /// # |
| /// # impl ToTokens for Type { |
| /// # fn to_tokens(&self, _tokens: &mut TokenStream) {} |
| /// # } |
| /// # |
| /// # let ty = Type; |
| /// # let call_site = Span::call_site(); |
| /// # |
| /// let ty_span = ty.span(); |
| /// let assert_sync = quote_spanned! {ty_span=> |
| /// struct _AssertSync where #ty: Sync; |
| /// }; |
| /// ``` |
| /// |
| /// If the assertion fails, the user will see an error like the following. The |
| /// input span of their type is highlighted in the error. |
| /// |
| /// ```text |
| /// error[E0277]: the trait bound `*const (): std::marker::Sync` is not satisfied |
| /// --> src/main.rs:10:21 |
| /// | |
| /// 10 | static ref PTR: *const () = &(); |
| /// | ^^^^^^^^^ `*const ()` cannot be shared between threads safely |
| /// ``` |
| /// |
| /// In this example it is important for the where-clause to be spanned with the |
| /// line/column information of the user's input type so that error messages are |
| /// placed appropriately by the compiler. |
| </span><span class="attribute">#[cfg(doc)] |
| #[macro_export] |
| </span><span class="macro">macro_rules! </span>quote_spanned { |
| (<span class="macro-nonterminal">$span</span>:expr=> $(<span class="macro-nonterminal">$tt</span>:tt)<span class="kw-2">*</span>) => { |
| ... |
| }; |
| } |
| |
| <span class="attribute">#[cfg(not(doc))] |
| #[macro_export] |
| </span><span class="macro">macro_rules! </span>quote_spanned { |
| (<span class="macro-nonterminal">$span</span>:expr=>) => {{ |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::Span </span>= <span class="macro-nonterminal">$crate::__private::get_span</span>(<span class="macro-nonterminal">$span</span>).__into_span(); |
| <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>() |
| }}; |
| |
| <span class="comment">// Special case rule for a single tt, for performance. |
| </span>(<span class="macro-nonterminal">$span</span>:expr=> <span class="macro-nonterminal">$tt</span>:tt) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="kw">let </span>_span: <span class="macro-nonterminal">$crate::__private::Span </span>= <span class="macro-nonterminal">$crate::__private::get_span</span>(<span class="macro-nonterminal">$span</span>).__into_span(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{<span class="macro-nonterminal">$tt </span>_s _span} |
| _s |
| }}; |
| |
| <span class="comment">// Special case rules for two tts, for performance. |
| </span>(<span class="macro-nonterminal">$span</span>:expr=> # <span class="macro-nonterminal">$var</span>:ident) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::Span </span>= <span class="macro-nonterminal">$crate::__private::get_span</span>(<span class="macro-nonterminal">$span</span>).__into_span(); |
| <span class="macro-nonterminal">$crate::ToTokens::to_tokens</span>(<span class="kw-2">&</span><span class="macro-nonterminal">$var</span>, <span class="kw-2">&mut </span>_s); |
| _s |
| }}; |
| (<span class="macro-nonterminal">$span</span>:expr=> <span class="macro-nonterminal">$tt1</span>:tt <span class="macro-nonterminal">$tt2</span>:tt) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="kw">let </span>_span: <span class="macro-nonterminal">$crate::__private::Span </span>= <span class="macro-nonterminal">$crate::__private::get_span</span>(<span class="macro-nonterminal">$span</span>).__into_span(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{<span class="macro-nonterminal">$tt1 </span>_s _span} |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{<span class="macro-nonterminal">$tt2 </span>_s _span} |
| _s |
| }}; |
| |
| <span class="comment">// Rule for any other number of tokens. |
| </span>(<span class="macro-nonterminal">$span</span>:expr=> $(<span class="macro-nonterminal">$tt</span>:tt)<span class="kw-2">*</span>) => {{ |
| <span class="kw">let </span><span class="kw-2">mut </span>_s = <span class="macro-nonterminal">$crate::__private::TokenStream::new</span>(); |
| <span class="kw">let </span>_span: <span class="macro-nonterminal">$crate::__private::Span </span>= <span class="macro-nonterminal">$crate::__private::get_span</span>(<span class="macro-nonterminal">$span</span>).__into_span(); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token_spanned!</span>{<span class="macro-nonterminal">_s </span>_span $(<span class="macro-nonterminal">$tt</span>)<span class="kw-2">*</span>} |
| _s |
| }}; |
| } |
| |
| <span class="comment">// Extract the names of all #metavariables and pass them to the $call macro. |
| // |
| // in: pounded_var_names!(then!(...) a #b c #( #d )* #e) |
| // out: then!(... b); |
| // then!(... d); |
| // then!(... e); |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>pounded_var_names { |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt $(<span class="macro-nonterminal">$tts</span>:tt)<span class="kw-2">*</span>) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names_with_context!</span>{<span class="macro-nonterminal">$</span><span class="macro">call! </span><span class="macro-nonterminal">$extra |
| </span>(@ $(<span class="macro-nonterminal">$tts</span>)<span class="kw-2">*</span>) |
| ($(<span class="macro-nonterminal">$tts</span>)* @) |
| } |
| }; |
| } |
| |
| <span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>pounded_var_names_with_context { |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt ($(<span class="macro-nonterminal">$b1</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$curr</span>:tt)<span class="kw-2">*</span>)) => { |
| $( |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_with_context!</span>{<span class="macro-nonterminal">$</span><span class="macro">call! </span><span class="macro-nonterminal">$extra $b1 $curr</span>} |
| )* |
| }; |
| } |
| |
| <span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>pounded_var_with_context { |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt <span class="macro-nonterminal">$b1</span>:tt ( $(<span class="macro-nonterminal">$inner</span>:tt)* )) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro-nonterminal">$</span><span class="macro">call! </span><span class="macro-nonterminal">$extra </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| }; |
| |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt <span class="macro-nonterminal">$b1</span>:tt [ $(<span class="macro-nonterminal">$inner</span>:tt)* ]) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro-nonterminal">$</span><span class="macro">call! </span><span class="macro-nonterminal">$extra </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| }; |
| |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt <span class="macro-nonterminal">$b1</span>:tt { $(<span class="macro-nonterminal">$inner</span>:tt)* }) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro-nonterminal">$</span><span class="macro">call! </span><span class="macro-nonterminal">$extra </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| }; |
| |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident!</span>($(<span class="macro-nonterminal">$extra</span>:tt)<span class="kw-2">*</span>) # <span class="macro-nonterminal">$var</span>:ident) => { |
| <span class="macro-nonterminal">$</span><span class="kw">crate</span>::<span class="macro-nonterminal">$</span><span class="macro">call!</span>($(<span class="macro-nonterminal">$extra</span>)* <span class="macro-nonterminal">$var</span>); |
| }; |
| |
| (<span class="macro-nonterminal">$call</span>:<span class="macro">ident! </span><span class="macro-nonterminal">$extra</span>:tt <span class="macro-nonterminal">$b1</span>:tt <span class="macro-nonterminal">$curr</span>:tt) => {}; |
| } |
| |
| <span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_bind_into_iter { |
| (<span class="macro-nonterminal">$has_iter</span>:ident <span class="macro-nonterminal">$var</span>:ident) => { |
| <span class="comment">// `mut` may be unused if $var occurs multiple times in the list. |
| </span><span class="attribute">#[allow(unused_mut)] |
| </span><span class="kw">let </span>(<span class="kw-2">mut </span><span class="macro-nonterminal">$var</span>, i) = <span class="macro-nonterminal">$var</span>.quote_into_iter(); |
| <span class="kw">let </span><span class="macro-nonterminal">$has_iter </span>= <span class="macro-nonterminal">$has_iter </span>| i; |
| }; |
| } |
| |
| <span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_bind_next_or_break { |
| (<span class="macro-nonterminal">$var</span>:ident) => { |
| <span class="kw">let </span><span class="macro-nonterminal">$var </span>= <span class="kw">match </span><span class="macro-nonterminal">$var</span>.next() { |
| <span class="prelude-val">Some</span>(_x) => <span class="macro-nonterminal">$crate::__private::RepInterp</span>(_x), |
| <span class="prelude-val">None </span>=> <span class="kw">break</span>, |
| }; |
| }; |
| } |
| |
| <span class="comment">// The obvious way to write this macro is as a tt muncher. This implementation |
| // does something more complex for two reasons. |
| // |
| // - With a tt muncher it's easy to hit Rust's built-in recursion_limit, which |
| // this implementation avoids because it isn't tail recursive. |
| // |
| // - Compile times for a tt muncher are quadratic relative to the length of |
| // the input. This implementation is linear, so it will be faster |
| // (potentially much faster) for big inputs. However, the constant factors |
| // of this implementation are higher than that of a tt muncher, so it is |
| // somewhat slower than a tt muncher if there are many invocations with |
| // short inputs. |
| // |
| // An invocation like this: |
| // |
| // quote_each_token!(_s a b c d e f g h i j); |
| // |
| // expands to this: |
| // |
| // quote_tokens_with_context!(_s |
| // (@ @ @ @ @ @ a b c d e f g h i j) |
| // (@ @ @ @ @ a b c d e f g h i j @) |
| // (@ @ @ @ a b c d e f g h i j @ @) |
| // (@ @ @ (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) @ @ @) |
| // (@ @ a b c d e f g h i j @ @ @ @) |
| // (@ a b c d e f g h i j @ @ @ @ @) |
| // (a b c d e f g h i j @ @ @ @ @ @) |
| // ); |
| // |
| // which gets transposed and expanded to this: |
| // |
| // quote_token_with_context!(_s @ @ @ @ @ @ a); |
| // quote_token_with_context!(_s @ @ @ @ @ a b); |
| // quote_token_with_context!(_s @ @ @ @ a b c); |
| // quote_token_with_context!(_s @ @ @ (a) b c d); |
| // quote_token_with_context!(_s @ @ a (b) c d e); |
| // quote_token_with_context!(_s @ a b (c) d e f); |
| // quote_token_with_context!(_s a b c (d) e f g); |
| // quote_token_with_context!(_s b c d (e) f g h); |
| // quote_token_with_context!(_s c d e (f) g h i); |
| // quote_token_with_context!(_s d e f (g) h i j); |
| // quote_token_with_context!(_s e f g (h) i j @); |
| // quote_token_with_context!(_s f g h (i) j @ @); |
| // quote_token_with_context!(_s g h i (j) @ @ @); |
| // quote_token_with_context!(_s h i j @ @ @ @); |
| // quote_token_with_context!(_s i j @ @ @ @ @); |
| // quote_token_with_context!(_s j @ @ @ @ @ @); |
| // |
| // Without having used muncher-style recursion, we get one invocation of |
| // quote_token_with_context for each original tt, with three tts of context on |
| // either side. This is enough for the longest possible interpolation form (a |
| // repetition with separator, as in `# (#var) , *`) to be fully represented with |
| // the first or last tt in the middle. |
| // |
| // The middle tt (surrounded by parentheses) is the tt being processed. |
| // |
| // - When it is a `#`, quote_token_with_context can do an interpolation. The |
| // interpolation kind will depend on the three subsequent tts. |
| // |
| // - When it is within a later part of an interpolation, it can be ignored |
| // because the interpolation has already been done. |
| // |
| // - When it is not part of an interpolation it can be pushed as a single |
| // token into the output. |
| // |
| // - When the middle token is an unparenthesized `@`, that call is one of the |
| // first 3 or last 3 calls of quote_token_with_context and does not |
| // correspond to one of the original input tokens, so turns into nothing. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_each_token { |
| (<span class="macro-nonterminal">$tokens</span>:ident $(<span class="macro-nonterminal">$tts</span>:tt)<span class="kw-2">*</span>) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_tokens_with_context!</span>{<span class="macro-nonterminal">$tokens |
| </span>(@ @ @ @ @ @ $(<span class="macro-nonterminal">$tts</span>)<span class="kw-2">*</span>) |
| (@ @ @ @ @ $(<span class="macro-nonterminal">$tts</span>)* @) |
| (@ @ @ @ $(<span class="macro-nonterminal">$tts</span>)* @ @) |
| (@ @ @ $((<span class="macro-nonterminal">$tts</span>))* @ @ @) |
| (@ @ $(<span class="macro-nonterminal">$tts</span>)* @ @ @ @) |
| (@ $(<span class="macro-nonterminal">$tts</span>)* @ @ @ @ @) |
| ($(<span class="macro-nonterminal">$tts</span>)* @ @ @ @ @ @) |
| } |
| }; |
| } |
| |
| <span class="comment">// See the explanation on quote_each_token. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_each_token_spanned { |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident $(<span class="macro-nonterminal">$tts</span>:tt)<span class="kw-2">*</span>) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_tokens_with_context_spanned!</span>{<span class="macro-nonterminal">$tokens $span |
| </span>(@ @ @ @ @ @ $(<span class="macro-nonterminal">$tts</span>)<span class="kw-2">*</span>) |
| (@ @ @ @ @ $(<span class="macro-nonterminal">$tts</span>)* @) |
| (@ @ @ @ $(<span class="macro-nonterminal">$tts</span>)* @ @) |
| (@ @ @ $((<span class="macro-nonterminal">$tts</span>))* @ @ @) |
| (@ @ $(<span class="macro-nonterminal">$tts</span>)* @ @ @ @) |
| (@ $(<span class="macro-nonterminal">$tts</span>)* @ @ @ @ @) |
| ($(<span class="macro-nonterminal">$tts</span>)* @ @ @ @ @ @) |
| } |
| }; |
| } |
| |
| <span class="comment">// See the explanation on quote_each_token. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_tokens_with_context { |
| (<span class="macro-nonterminal">$tokens</span>:ident |
| ($(<span class="macro-nonterminal">$b3</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$b2</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$b1</span>:tt)<span class="kw-2">*</span>) |
| ($(<span class="macro-nonterminal">$curr</span>:tt)<span class="kw-2">*</span>) |
| ($(<span class="macro-nonterminal">$a1</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$a2</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$a3</span>:tt)<span class="kw-2">*</span>) |
| ) => { |
| $( |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_with_context!</span>{<span class="macro-nonterminal">$tokens $b3 $b2 $b1 $curr $a1 $a2 $a3</span>} |
| )* |
| }; |
| } |
| |
| <span class="comment">// See the explanation on quote_each_token. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_tokens_with_context_spanned { |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident |
| ($(<span class="macro-nonterminal">$b3</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$b2</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$b1</span>:tt)<span class="kw-2">*</span>) |
| ($(<span class="macro-nonterminal">$curr</span>:tt)<span class="kw-2">*</span>) |
| ($(<span class="macro-nonterminal">$a1</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$a2</span>:tt)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$a3</span>:tt)<span class="kw-2">*</span>) |
| ) => { |
| $( |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_with_context_spanned!</span>{<span class="macro-nonterminal">$tokens $span $b3 $b2 $b1 $curr $a1 $a2 $a3</span>} |
| )* |
| }; |
| } |
| |
| <span class="comment">// See the explanation on quote_each_token. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_token_with_context { |
| <span class="comment">// Unparenthesized `@` indicates this call does not correspond to one of the |
| // original input tokens. Ignore it. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt @ <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| <span class="comment">// A repetition with no separator. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) * <span class="macro-nonterminal">$a3</span>:tt) => {{ |
| <span class="kw">use </span><span class="macro-nonterminal">$crate::__private::ext</span>::<span class="kw-2">*</span>; |
| <span class="kw">let </span>has_iter = <span class="macro-nonterminal">$crate::__private::ThereIsNoIteratorInRepetition</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_into_iter!</span>(<span class="macro-nonterminal">has_iter</span>) () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::HasIterator </span>= has_iter; |
| <span class="comment">// This is `while true` instead of `loop` because if there are no |
| // iterators used inside of this repetition then the body would not |
| // contain any `break`, so the compiler would emit unreachable code |
| // warnings on anything below the loop. We use has_iter to detect and |
| // fail to compile when there are no iterators, so here we just work |
| // around the unneeded extra warning. |
| </span><span class="kw">while </span><span class="bool-val">true </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_next_or_break!</span>() () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token!</span>{<span class="macro-nonterminal">$tokens </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| } |
| }}; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (( $(<span class="macro-nonterminal">$inner</span>:tt)* )) * <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| <span class="comment">// A repetition with separator. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$sep</span>:tt <span class="kw-2">*</span>) => {{ |
| <span class="kw">use </span><span class="macro-nonterminal">$crate::__private::ext</span>::<span class="kw-2">*</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>_i = <span class="number">0usize</span>; |
| <span class="kw">let </span>has_iter = <span class="macro-nonterminal">$crate::__private::ThereIsNoIteratorInRepetition</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_into_iter!</span>(<span class="macro-nonterminal">has_iter</span>) () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::HasIterator </span>= has_iter; |
| <span class="kw">while </span><span class="bool-val">true </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_next_or_break!</span>() () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">if </span>_i > <span class="number">0 </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{<span class="macro-nonterminal">$sep $tokens</span>} |
| } |
| _i += <span class="number">1</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token!</span>{<span class="macro-nonterminal">$tokens </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| } |
| }}; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (( $(<span class="macro-nonterminal">$inner</span>:tt)* )) <span class="macro-nonterminal">$sep</span>:tt * <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) (<span class="macro-nonterminal">$sep</span>:tt) * <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| <span class="comment">// (A special case for `#(var)**`, where the first `*` is treated as the |
| // repetition symbol and the second `*` is treated as an ordinary token.) |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) * (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="comment">// https://github.com/dtolnay/quote/issues/130 |
| </span><span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{* <span class="macro-nonterminal">$tokens</span>} |
| }; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$sep</span>:tt (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| <span class="comment">// A non-repetition interpolation. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) <span class="macro-nonterminal">$var</span>:ident <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="macro-nonterminal">$crate::ToTokens::to_tokens</span>(<span class="kw-2">&</span><span class="macro-nonterminal">$var</span>, <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| <span class="comment">// ... and one step later. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (<span class="macro-nonterminal">$var</span>:ident) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| <span class="comment">// An ordinary token, not part of any interpolation. |
| </span>(<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (<span class="macro-nonterminal">$curr</span>:tt) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token!</span>{<span class="macro-nonterminal">$curr $tokens</span>} |
| }; |
| } |
| |
| <span class="comment">// See the explanation on quote_each_token, and on the individual rules of |
| // quote_token_with_context. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_token_with_context_spanned { |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt @ <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) * <span class="macro-nonterminal">$a3</span>:tt) => {{ |
| <span class="kw">use </span><span class="macro-nonterminal">$crate::__private::ext</span>::<span class="kw-2">*</span>; |
| <span class="kw">let </span>has_iter = <span class="macro-nonterminal">$crate::__private::ThereIsNoIteratorInRepetition</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_into_iter!</span>(<span class="macro-nonterminal">has_iter</span>) () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::HasIterator </span>= has_iter; |
| <span class="kw">while </span><span class="bool-val">true </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_next_or_break!</span>() () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token_spanned!</span>{<span class="macro-nonterminal">$tokens $span </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| } |
| }}; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (( $(<span class="macro-nonterminal">$inner</span>:tt)* )) * <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$sep</span>:tt <span class="kw-2">*</span>) => {{ |
| <span class="kw">use </span><span class="macro-nonterminal">$crate::__private::ext</span>::<span class="kw-2">*</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>_i = <span class="number">0usize</span>; |
| <span class="kw">let </span>has_iter = <span class="macro-nonterminal">$crate::__private::ThereIsNoIteratorInRepetition</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_into_iter!</span>(<span class="macro-nonterminal">has_iter</span>) () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">let _</span>: <span class="macro-nonterminal">$crate::__private::HasIterator </span>= has_iter; |
| <span class="kw">while </span><span class="bool-val">true </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::pounded_var_names!</span>{<span class="macro">quote_bind_next_or_break!</span>() () $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| <span class="kw">if </span>_i > <span class="number">0 </span>{ |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{<span class="macro-nonterminal">$sep $tokens $span</span>} |
| } |
| _i += <span class="number">1</span>; |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_each_token_spanned!</span>{<span class="macro-nonterminal">$tokens $span </span>$(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>} |
| } |
| }}; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (( $(<span class="macro-nonterminal">$inner</span>:tt)* )) <span class="macro-nonterminal">$sep</span>:tt * <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) (<span class="macro-nonterminal">$sep</span>:tt) * <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) * (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="comment">// https://github.com/dtolnay/quote/issues/130 |
| </span><span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{* <span class="macro-nonterminal">$tokens $span</span>} |
| }; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident # ( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$sep</span>:tt (<span class="kw-2">*</span>) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (#) <span class="macro-nonterminal">$var</span>:ident <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="macro-nonterminal">$crate::ToTokens::to_tokens</span>(<span class="kw-2">&</span><span class="macro-nonterminal">$var</span>, <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt # (<span class="macro-nonterminal">$var</span>:ident) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => {}; |
| |
| (<span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident <span class="macro-nonterminal">$b3</span>:tt <span class="macro-nonterminal">$b2</span>:tt <span class="macro-nonterminal">$b1</span>:tt (<span class="macro-nonterminal">$curr</span>:tt) <span class="macro-nonterminal">$a1</span>:tt <span class="macro-nonterminal">$a2</span>:tt <span class="macro-nonterminal">$a3</span>:tt) => { |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_token_spanned!</span>{<span class="macro-nonterminal">$curr $tokens $span</span>} |
| }; |
| } |
| |
| <span class="comment">// These rules are ordered by approximate token frequency, at least for the |
| // first 10 or so, to improve compile times. Having `ident` first is by far the |
| // most important because it's typically 2-3x more common than the next most |
| // common token. |
| // |
| // Separately, we put the token being matched in the very front so that failing |
| // rules may fail to match as quickly as possible. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_token { |
| (<span class="macro-nonterminal">$ident</span>:ident <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ident</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$ident</span>)); |
| }; |
| |
| (:: <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_colon2</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Parenthesis</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote!</span>($(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| ([ $(<span class="macro-nonterminal">$inner</span>:tt)* ] <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Bracket</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote!</span>($(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| ({ $(<span class="macro-nonterminal">$inner</span>:tt)* } <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Brace</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote!</span>($(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| (# <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_pound</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (, <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_comma</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (. <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (; <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_semi</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (: <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_colon</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (+ <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_add</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (+= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_add_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (& <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (&& <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and_and</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (&= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (@ <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_at</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (! <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_bang</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (^ <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_caret</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (^= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_caret_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (/ <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_div</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (/= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_div_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (.. <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot2</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (... <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot3</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (..= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot_dot_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (== <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_eq_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (>= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ge</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (> <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_gt</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_le</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (< <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_lt</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<span class="kw-2">*</span>= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_mul_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (!= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ne</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (| <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (|= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (|| <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or_or</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<span class="question-mark">? </span><span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_question</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (-> <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rarrow</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<- <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_larrow</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (% <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rem</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (%= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rem_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (=> <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_fat_arrow</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<< <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shl</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<<= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shl_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (>> <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shr</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (>>= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shr_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (* <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_star</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (- <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_sub</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (-= <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_sub_eq</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<span class="macro-nonterminal">$lifetime</span>:lifetime <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_lifetime</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$lifetime</span>)); |
| }; |
| |
| (<span class="kw">_ </span><span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_underscore</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>); |
| }; |
| |
| (<span class="macro-nonterminal">$other</span>:tt <span class="macro-nonterminal">$tokens</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::parse</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$other</span>)); |
| }; |
| } |
| |
| <span class="comment">// See the comment above `quote_token!` about the rule ordering. |
| </span><span class="attribute">#[macro_export] |
| #[doc(hidden)] |
| </span><span class="macro">macro_rules! </span>quote_token_spanned { |
| (<span class="macro-nonterminal">$ident</span>:ident <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ident_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$ident</span>)); |
| }; |
| |
| (:: <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_colon2_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (( $(<span class="macro-nonterminal">$inner</span>:tt)* ) <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group_spanned</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$span</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Parenthesis</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_spanned!</span>(<span class="macro-nonterminal">$span</span>=> $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| ([ $(<span class="macro-nonterminal">$inner</span>:tt)* ] <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group_spanned</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$span</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Bracket</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_spanned!</span>(<span class="macro-nonterminal">$span</span>=> $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| ({ $(<span class="macro-nonterminal">$inner</span>:tt)* } <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_group_spanned</span>( |
| <span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, |
| <span class="macro-nonterminal">$span</span>, |
| <span class="macro-nonterminal">$crate::__private::Delimiter::Brace</span>, |
| <span class="macro-nonterminal">$</span><span class="macro">crate::quote_spanned!</span>(<span class="macro-nonterminal">$span</span>=> $(<span class="macro-nonterminal">$inner</span>)<span class="kw-2">*</span>), |
| ); |
| }; |
| |
| (# <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_pound_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (, <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_comma_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (. <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (; <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_semi_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (: <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_colon_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (+ <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_add_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (+= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_add_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (& <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (&& <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and_and_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (&= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_and_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (@ <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_at_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (! <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_bang_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (^ <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_caret_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (^= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_caret_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (/ <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_div_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (/= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_div_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (.. <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot2_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (... <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot3_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (..= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_dot_dot_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (== <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_eq_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (>= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ge_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (> <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_gt_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_le_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (< <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_lt_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<span class="kw-2">*</span>= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_mul_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (!= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_ne_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (| <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (|= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (|| <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_or_or_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<span class="question-mark">? </span><span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_question_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (-> <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rarrow_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<- <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_larrow_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (% <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rem_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (%= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_rem_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (=> <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_fat_arrow_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<< <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shl_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<<= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shl_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (>> <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shr_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (>>= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_shr_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (* <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_star_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (- <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_sub_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (-= <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_sub_eq_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<span class="macro-nonterminal">$lifetime</span>:lifetime <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_lifetime_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$lifetime</span>)); |
| }; |
| |
| (<span class="kw">_ </span><span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::push_underscore_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>); |
| }; |
| |
| (<span class="macro-nonterminal">$other</span>:tt <span class="macro-nonterminal">$tokens</span>:ident <span class="macro-nonterminal">$span</span>:ident) => { |
| <span class="macro-nonterminal">$crate::__private::parse_spanned</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">$tokens</span>, <span class="macro-nonterminal">$span</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$other</span>)); |
| }; |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="quote" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
